It can be a server environment thing.. You could try to use the ftp command mode what is in RC1
EDIT: And what I mean by that is these snippet parameters:
- &use_ftp_commands - If enabled, MaxiGallery uses PHP FTP commands to create filesystem folders for gallery pictures. This is needed in certain server environments. Default: false
- &ftp_server - FTP address to the server running MODx.
- &ftp_port - Port number for the FTP service. Default: 21
- &ftp_user - FTP username
- &ftp_pass - FTP password
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